Fix azure-digitaltwins-core dependencies (#42079)

* fix digitaltwins to have isodate dependency

* update changelog to reflect change

* update requirement to have a max

Author: scbedd

sdk/digitaltwins/azure-digitaltwins-core/CHANGELOG.md

@@ -7,6 +7,7 @@
 - Updated service API version to use API version 2023-10-31 by default.
 - Updated internal implementation while maintaining API compatibility.
 - Improved type annotations throughout the library.
+- Added `isodate` dependency.
 
 ## 1.2.0 (2022-05-31)
  - GA release
@@ -45,7 +46,7 @@
 - User Agent value updated according to guidelines.
 - Updated JSON patch parameter typehints to `List[Dict[str, object]]`.
 - Updated constructor credential typehint to `azure.core.credentials.TokenCredential`
-- Samples and documentation updated. 
+- Samples and documentation updated.
 
 
 ## 1.0.0b1 (2020-10-31)

sdk/digitaltwins/azure-digitaltwins-core/setup.py

@@ -70,5 +70,6 @@
     python_requires=">=3.7",
     install_requires=[
         "azure-core<2.0.0,>=1.29.0",
+        "isodate>=0.6.1",
     ],
 )